Bluetooth headphones with 16kHz sampling microphone and more or less normal sound?

Question

Skype

Prehistory. In Skype, when you communicate via bluetooth headphones, the sound switches to reduced quality due to the fact that the microphone (8kHz sample rate).
Colleagues, I'm looking for headphones with a 16 kHz microphone sampling rate with a more or less normal sound in general.
So far I've settled on Sennheiser PXC 550 Wireless . But I'm in the office. The request was said they do not know what the sampling frequency of the microphone is. One hope for their crazy technology with microphones (there seem to be like 3 of them already).
I would be grateful for any thoughts and your personal experience.

Answer 1

It has nothing to do with the microphone. This is a limitation of the HSP/HFP bluetooth profiles. And you can’t do anything with sound either with a microphone or with headphones.

Answer 2

Normal sound is aptX technology over Bluetooth
But so far very few Bluetooth devices support it

Answer 3

Samsung ANC